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OCE 1001 CHAPTER 11 (FSU EXAM 3) QUESTIONS WITH CORRECT SOLUTIONS GRADED A+
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OCE 1001 CHAPTER 11 (FSU EXAM 3) QUESTIONS WITH CORRECT SOLUTIONS GRADED A+
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OCE 1001 CHAPTER 11 (FSU EXAM 3)QUESTIONS WITH CORRECT SOLUTIONS
GRADED A+
Why was DDT intentionally released into the environment? Answer - It was
applied in swamps to kill mosquitos that spread malaria.
When was DDT banned in the United States? Answer - 1972
Why is DDT still a concern today, even though it has now been banned in the
United States for decades?
Choose all that apply. Answer - everything except " i.t breaks down arsenic..."
What is the concentration of DDT in seawater? Answer - 0.000003 parts per
million
Which of the following process(es) explain why DDT concentrations in
predators such as osprey or bald eagles are higher than the DDT concentrations
in their prey?
Choose all that apply. Answer - biomagnification
bioaccumulation
Which of the following statements correctly explain the problems with plastics
in the marine environment?
Choose all that apply. Answer - everything except "accumulating..."
, Which of the following techniques are the best options for cleaning up after an
oil spill when considering the whole environment affected?
Choose all that apply. Answer - Introduce microbes to begin the process of
bioremediation.
Skim floating oil off the surface immediately after the spill.
What is the biggest single source of mercury? Answer - Burning of fossil fuels
Scientific studies have shown that fish exposed to PAHs in crude oil exhibited
changes in ________ that are linked to developmental abnormalities,
decreased embryo survival, and lower reproductive success. Answer - gene
expression
Which of the following has been indicated as a cause of spontaneous abortions
in sea lions and the death of shrimp in Escambia Bay, Florida? Answer - PCBs
Which of the following statements is/are true regarding the cleanup of oil
spills?
Choose all that apply. Answer - Cleaning up oil spills is difficult.
Cleaning up oil spills is expensive
Cleanup efforts can create new hazards.
What happens after a surface oil spill?
Choose all that apply. Answer - Photooxidation occurs.
An oil slick is created.
Emulsification occurs.
What causes emulsification of an oil slick? Answer - evaporation of the lighter
components in the oil
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